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GB/T 33369-2016 English PDF (GBT33369-2016)
GB/T 33369-2016 English PDF (GBT33369-2016)
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GB/T 33369-2016: Aluminium alloy clad sheets, strips and foils for brazing
GB/T 33369-2016
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.10
H 61
Aluminum alloy clad sheets, strips and foils for
brazing
ISSUED ON: DECEMBER 30, 2016
IMPLEMENTED ON: NOVEMBER 01, 2017
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Requirements ... 6
5 Test method ... 16
6 Inspection rules ... 19
7 Marking, packaging, transportation, storage and quality certificate ... 21
8 Purchase order (or contract) content ... 22
Appendix A (Informative) Typical designations, status, clad ratio, size
specifications of clad foils for fins, clad strips for pipe making, clad sheets for
deep drawing ... 24
Appendix B (Informative) Solid, liquid phase line temperature and brazing
temperature of composite material matrix and cladding alloy ... 25
Appendix C (Informative) Representation of composite material code ... 26
Aluminum alloy clad sheets, strips and foils for
brazing
1 Scope
This standard specifies the requirements, test methods, inspection rules and
markings, packaging, transportation, storage, quality certificates and purchase
orders (or contracts) of aluminum alloy clad sheets, strips and foils for brazing.
This standard applies to aluminum alloy clad sheets, strips and foils for brazing
(hereinafter referred to as clad materials).
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 3190 Wrought aluminum and aluminum alloy - Chemical composition
GB/T 3199 Wrought aluminum and aluminum alloy products - Packing,
marking, transporting and storing
GB/T 3246.1 Inspection method for structure of wrought aluminum and
aluminum alloy products - Part 1: Inspection method for microstructure
GB/T 3880.3 Wrought aluminum and aluminum alloy plates, sheets and
strips for general engineering - Part 3: Tolerances on forms and dimensions
GB/T 4156 Metallic materials - Sheet and strip - Erichsen cupping test
GB/T 7999 Optical emission spectrometric analysis method of aluminum and
aluminum alloys
GB/T 8170 Rules of rounding off for numerical values and expression and
judgement of limiting values
GB/T 16865 Test pieces and method for tensile test for wrought aluminum
and magnesium alloys products
GB/T 17432 Methods for sampling for analyzing the chemical composition
of wrought aluminum and aluminum alloys
GB/T 20975 (all parts) Methods for chemical analysis of aluminum and
aluminum alloys
GB/T 27675 Designation system for aluminum and aluminum alloys
composite sheets, strips and foils
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Aluminum alloy clad sheets
Sheets made of two or more aluminum alloy materials after rolling and
compounding.
3.2
Aluminum alloy clad strip, foils
Strips and foils made of two or more aluminum alloy materials after rolling
and compounding (hereinafter referred to as coils).
3.3
Cladding
Cladding layer for brazing in composite materials.
3.4
Matrix alloy
A core layer that plays a structural role or has a special role in composite
materials.
3.5
Clad ratio
The percentage of the thickness of a single cladding layer to the total
thickness of the clad, which is calculated according to formula (1).
and the chemical composition of each matrix component layer; calculate to
determine the chemical composition of the brazing layer of the sample blank.
5.1.4 For 3A11, 3B11, 4A43, 4A45, 4104, 6951, 7A11, carry out routine
chemical analysis only on elements with numerical requirements outside the
"Al" and "other impurities" columns in Table 3. When the quality score of
unconventional analysis elements is suspected to exceed the limit value of this
standard, the producer shall analyze these elements.
5.1.5 The "Al" content is calculated according to the method specified in GB/T
3190. When calculating the "Al" content, the sum of the analysis values of
conventional analysis elements and suspected excessive unconventional
analysis elements is taken as the "sum of element content".
5.1.6 The analysis value is judged by the rounding comparison method; the
numerical rounding rules are carried out in accordance with the relevant
provisions of GB/T 8170. The rounding off digits shall be consistent with the
limit digits as specified in Table 2 of this standard or GB/T 3190.
5.2 Deviation of clad ratio
The inspection method for the coverage of composite materials shall be
implemented in accordance with GB/T 3246.1.
5.3 Dimensional deviation
5.3.1 Thickness
Composite materials which have a thickness less than or equal to 0.130 mm
are measured by the use of a micrometer which has a scale value not greater
than 0.001 mm; composite materials which have a thickness greater than 0.130
mm and less than or equal to 0.250 mm are measured by a micrometer which
has a scale value not greater than 0.002 mm; composite materials which have
a thickness of larger than 0.250 mm should be measured by a micrometer (or
a measuring tool with the same accuracy) which has a measurement accuracy
of not less than 0.01 mm.
5.3.2 Width
The width of the composite material is measured by a steel strip which has an
accuracy of 1 mm or a tool which has corresponding accuracy.
5.3.3 Length
The length of the clad sheet is measured by a steel strip which has an accuracy
of 1 mm or a tool which has corresponding accuracy.
The length and inner diameter of the tube core are measured by a measuring
tool that can ensure accuracy. The core material is guaranteed by the supplier;
other items are visually inspected.
5.7 Appearance quality
Under natural scattered light, visually inspect the appearance quality. When
necessary, the size measurement tool can be used to define the size of the
defect, the depth of the defect can be determined by grinding.
6 Inspection rules
6.1 Inspection and acceptance
6.1.1 The product shall be inspected by the supplier, to ensure that the product
quality meets the requirements of this standard and the purchase order (or
contract); meanwhile fill in the quality certificate.
6.1.2 The purchaser shall inspect the products received in accordance with the
provisions of this standard. When the inspection result is inconsistent with the
provisions of this standard and the purchase order (or contract), it shall be
submitted in writing to the supplier, to be settled by the supplier and the buyer
through negotiation. Objections related to appearance quality and size
deviation shall be raised within one month from the date of receipt of the product;
objections related to other properties shall be raised within 3 months from the
date of receipt of the product. If arbitration is required, it can be entrusted to an
organization as recognized by both the supplier and the buyer; samples will be
taken together at the buyer's premise.
6.2 Group-batch
Products shall be submitted for acceptance in batches; each batch shall be
composed of products of the same designation (or code), state, size
Get QUOTATION in 1-minute: Click GB/T 33369-2016
Historical versions: GB/T 33369-2016
Preview True-PDF (Reload/Scroll if blank)
GB/T 33369-2016: Aluminium alloy clad sheets, strips and foils for brazing
GB/T 33369-2016
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.10
H 61
Aluminum alloy clad sheets, strips and foils for
brazing
ISSUED ON: DECEMBER 30, 2016
IMPLEMENTED ON: NOVEMBER 01, 2017
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Requirements ... 6
5 Test method ... 16
6 Inspection rules ... 19
7 Marking, packaging, transportation, storage and quality certificate ... 21
8 Purchase order (or contract) content ... 22
Appendix A (Informative) Typical designations, status, clad ratio, size
specifications of clad foils for fins, clad strips for pipe making, clad sheets for
deep drawing ... 24
Appendix B (Informative) Solid, liquid phase line temperature and brazing
temperature of composite material matrix and cladding alloy ... 25
Appendix C (Informative) Representation of composite material code ... 26
Aluminum alloy clad sheets, strips and foils for
brazing
1 Scope
This standard specifies the requirements, test methods, inspection rules and
markings, packaging, transportation, storage, quality certificates and purchase
orders (or contracts) of aluminum alloy clad sheets, strips and foils for brazing.
This standard applies to aluminum alloy clad sheets, strips and foils for brazing
(hereinafter referred to as clad materials).
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 3190 Wrought aluminum and aluminum alloy - Chemical composition
GB/T 3199 Wrought aluminum and aluminum alloy products - Packing,
marking, transporting and storing
GB/T 3246.1 Inspection method for structure of wrought aluminum and
aluminum alloy products - Part 1: Inspection method for microstructure
GB/T 3880.3 Wrought aluminum and aluminum alloy plates, sheets and
strips for general engineering - Part 3: Tolerances on forms and dimensions
GB/T 4156 Metallic materials - Sheet and strip - Erichsen cupping test
GB/T 7999 Optical emission spectrometric analysis method of aluminum and
aluminum alloys
GB/T 8170 Rules of rounding off for numerical values and expression and
judgement of limiting values
GB/T 16865 Test pieces and method for tensile test for wrought aluminum
and magnesium alloys products
GB/T 17432 Methods for sampling for analyzing the chemical composition
of wrought aluminum and aluminum alloys
GB/T 20975 (all parts) Methods for chemical analysis of aluminum and
aluminum alloys
GB/T 27675 Designation system for aluminum and aluminum alloys
composite sheets, strips and foils
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Aluminum alloy clad sheets
Sheets made of two or more aluminum alloy materials after rolling and
compounding.
3.2
Aluminum alloy clad strip, foils
Strips and foils made of two or more aluminum alloy materials after rolling
and compounding (hereinafter referred to as coils).
3.3
Cladding
Cladding layer for brazing in composite materials.
3.4
Matrix alloy
A core layer that plays a structural role or has a special role in composite
materials.
3.5
Clad ratio
The percentage of the thickness of a single cladding layer to the total
thickness of the clad, which is calculated according to formula (1).
and the chemical composition of each matrix component layer; calculate to
determine the chemical composition of the brazing layer of the sample blank.
5.1.4 For 3A11, 3B11, 4A43, 4A45, 4104, 6951, 7A11, carry out routine
chemical analysis only on elements with numerical requirements outside the
"Al" and "other impurities" columns in Table 3. When the quality score of
unconventional analysis elements is suspected to exceed the limit value of this
standard, the producer shall analyze these elements.
5.1.5 The "Al" content is calculated according to the method specified in GB/T
3190. When calculating the "Al" content, the sum of the analysis values of
conventional analysis elements and suspected excessive unconventional
analysis elements is taken as the "sum of element content".
5.1.6 The analysis value is judged by the rounding comparison method; the
numerical rounding rules are carried out in accordance with the relevant
provisions of GB/T 8170. The rounding off digits shall be consistent with the
limit digits as specified in Table 2 of this standard or GB/T 3190.
5.2 Deviation of clad ratio
The inspection method for the coverage of composite materials shall be
implemented in accordance with GB/T 3246.1.
5.3 Dimensional deviation
5.3.1 Thickness
Composite materials which have a thickness less than or equal to 0.130 mm
are measured by the use of a micrometer which has a scale value not greater
than 0.001 mm; composite materials which have a thickness greater than 0.130
mm and less than or equal to 0.250 mm are measured by a micrometer which
has a scale value not greater than 0.002 mm; composite materials which have
a thickness of larger than 0.250 mm should be measured by a micrometer (or
a measuring tool with the same accuracy) which has a measurement accuracy
of not less than 0.01 mm.
5.3.2 Width
The width of the composite material is measured by a steel strip which has an
accuracy of 1 mm or a tool which has corresponding accuracy.
5.3.3 Length
The length of the clad sheet is measured by a steel strip which has an accuracy
of 1 mm or a tool which has corresponding accuracy.
The length and inner diameter of the tube core are measured by a measuring
tool that can ensure accuracy. The core material is guaranteed by the supplier;
other items are visually inspected.
5.7 Appearance quality
Under natural scattered light, visually inspect the appearance quality. When
necessary, the size measurement tool can be used to define the size of the
defect, the depth of the defect can be determined by grinding.
6 Inspection rules
6.1 Inspection and acceptance
6.1.1 The product shall be inspected by the supplier, to ensure that the product
quality meets the requirements of this standard and the purchase order (or
contract); meanwhile fill in the quality certificate.
6.1.2 The purchaser shall inspect the products received in accordance with the
provisions of this standard. When the inspection result is inconsistent with the
provisions of this standard and the purchase order (or contract), it shall be
submitted in writing to the supplier, to be settled by the supplier and the buyer
through negotiation. Objections related to appearance quality and size
deviation shall be raised within one month from the date of receipt of the product;
objections related to other properties shall be raised within 3 months from the
date of receipt of the product. If arbitration is required, it can be entrusted to an
organization as recognized by both the supplier and the buyer; samples will be
taken together at the buyer's premise.
6.2 Group-batch
Products shall be submitted for acceptance in batches; each batch shall be
composed of products of the same designation (or code), state, size
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